The Carbon Border Adjustment Mechanism (CBAM) requires EU importers of regulated goods — cement, steel, aluminium, fertilisers, electricity, and hydrogen — to purchase and surrender CBAM certificates corresponding to embedded carbon emissions. Full enforcement begins January 2026 with the first certificate surrender deadline on May 31, 2027. This guide explains what CBAM certificates are, how embe...
What is a CBAM Certificate of Conformity? A Complete Guide for EU Exporters and Importers
Published: June 2026 | Author: Trade Compliance Records | Category: EU Regulatory Compliance, Carbon Border Adjustment
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Summary
The Carbon Border Adjustment Mechanism (CBAM) is the European Union's carbon pricing instrument for imports, designed to prevent carbon leakage by ensuring that goods entering the EU from countries with lower or no carbon pricing face an equivalent cost to those produced within the EU under the Emissions Trading System (ETS). A CBAM certificate is the instrument through which this cost is settled: importers must purchase and surrender CBAM certificates corresponding to the embedded carbon emissions of their regulated imports.
The CBAM entered its transitional phase on October 1, 2023, and moves to its full enforcement phase on January 1, 2026. Under full enforcement, importers of regulated goods must hold and surrender CBAM certificates by May 31 each year for the preceding calendar year's imports. The first full surrender obligation — covering calendar year 2026 imports — falls due on May 31, 2027.
Understanding what a CBAM certificate is, how it is calculated, and what documentation is required is now a compliance obligation for any business importing regulated goods into the EU.
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Which Goods Are Subject to CBAM?
CBAM applies to specific product categories selected because they are both carbon-intensive and at high risk of carbon leakage — meaning production could shift to countries with weaker climate regulations if the EU imposed carbon costs only on domestic producers.
The following table summarizes the regulated product categories and their relevant Combined Nomenclature (CN) codes:
| Sector | Key Products | CN Code Range | |--------|-------------|---------------| | Cement | Portland cement, aluminous cement, clinker | 2507, 2523 | | Iron and Steel | Flat-rolled products, bars, rods, tubes, pipes | 7206–7229, 7301–7326 | | Aluminium | Unwrought aluminium, bars, rods, profiles, wire | 7601–7616 | | Fertilisers | Ammonia, nitric acid, mixed nitrogen fertilisers | 2808, 2814, 3102, 3105 | | Electricity | Electricity imports | 2716 | | Hydrogen | Hydrogen (added from 2026) | 2804 10 |
The European Commission has the authority to expand the list of covered sectors. The current regulated list covers approximately 50% of EU ETS sectors by carbon value, with further expansion expected after the 2025 review.
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What is a CBAM Certificate?
A CBAM certificate is a digital instrument issued by the competent authority of an EU member state to an authorised CBAM declarant. Each certificate represents one tonne of CO₂ equivalent (tCO₂e) of embedded emissions. Importers must purchase certificates at a price that mirrors the weekly average auction price of EU ETS allowances, ensuring equivalence with the carbon cost faced by EU producers.
Key characteristics of CBAM certificates:
Pricing. The price of each CBAM certific...